R the demand fuunction is p= 400- 4r, what ill be maximum tr and when options 10,000 unit at x = 50 unit 10,000g tfas r = 50at et 1 20,000 unit 20,000t 15,000 n

r the demand fuunction is p= 400- 4r, what ill be maximum TR and when Options 10,000 unit at x = 50 unit 10,000g Tfas r = 50aT ET 1 20,000 unit 20,000T 15,000 nit 3 15,000 zT 1,900 unit at x = 5 unit 4 1,900 Tafr x= 5 zo